package com.wl.mr.output;

import com.wl.mr.sequence.SequenceDriver;
import com.wl.mr.sequence.SequenceFileInputFormat;
import com.wl.mr.sequence.SequenceMapper;
import com.wl.mr.sequence.SequenceReducer;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import java.io.IOException;

public class OutputDriver {
    public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
        Configuration conf = new Configuration();
        Job job = Job.getInstance(conf, "OutputDriver");

        job.setJarByClass(OutputDriver.class);

        job.setMapperClass(OutputMapper.class);
        job.setReducerClass(OutputReducer.class);

        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(NullWritable.class);

        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(NullWritable.class);

        job.setOutputFormatClass(CusterOutputFormat.class);

        FileInputFormat.setInputPaths(job,new Path(args[0]));
        FileOutputFormat.setOutputPath(job,new Path(args[1]));

        boolean flag = job.waitForCompletion(true);
        System.exit(flag?0:1);
    }
}
